一作SIGIR 2026Poster· Information Retrieval (Short)
Reward Shaping for Robust Refusal in Small Language Models for Retrieval-Augmented Question Answering
Thilina C. Rajapakse · Sebastian Schelter
摘要
We focus on smaller open-source LMs (2–7B parameters), which are attractive for practical deployment due to their lower computational cost and greater accessibility than frontier-scale models. We show that instruction-tuned models generate answers even when explicitly prompted to refuse when the...